};
-static int StorVscOnDeviceAdd(struct hv_device *Device, void *AdditionalInfo);
-static int StorVscOnDeviceRemove(struct hv_device *Device);
-static int StorVscOnIORequest(struct hv_device *Device,
- struct hv_storvsc_request *Request);
-static int StorVscOnHostReset(struct hv_device *Device);
-static void StorVscOnCleanup(struct hv_driver *Device);
-static void StorVscOnChannelCallback(void *Context);
-static void StorVscOnIOCompletion(struct hv_device *Device,
- struct vstor_packet *VStorPacket,
- struct storvsc_request_extension *RequestExt);
-static void StorVscOnReceive(struct hv_device *Device,
- struct vstor_packet *VStorPacket,
- struct storvsc_request_extension *RequestExt);
-static int StorVscConnectToVsp(struct hv_device *Device);
-
static inline struct storvsc_device *AllocStorDevice(struct hv_device *Device)
{
struct storvsc_device *storDevice;
return storDevice;
}
-/**
- * StorVscInitialize - Main entry point
- */
-int StorVscInitialize(struct hv_driver *Driver)
-{
- struct storvsc_driver_object *storDriver;
-
- DPRINT_ENTER(STORVSC);
-
- storDriver = (struct storvsc_driver_object *)Driver;
-
- DPRINT_DBG(STORVSC, "sizeof(STORVSC_REQUEST)=%zd "
- "sizeof(struct storvsc_request_extension)=%zd "
- "sizeof(struct vstor_packet)=%zd, "
- "sizeof(struct vmscsi_request)=%zd",
- sizeof(struct hv_storvsc_request),
- sizeof(struct storvsc_request_extension),
- sizeof(struct vstor_packet),
- sizeof(struct vmscsi_request));
-
- /* Make sure we are at least 2 pages since 1 page is used for control */
- ASSERT(storDriver->RingBufferSize >= (PAGE_SIZE << 1));
-
- Driver->name = gDriverName;
- memcpy(&Driver->deviceType, &gStorVscDeviceType,
- sizeof(struct hv_guid));
-
- storDriver->RequestExtSize = sizeof(struct storvsc_request_extension);
-
- /*
- * Divide the ring buffer data size (which is 1 page less
- * than the ring buffer size since that page is reserved for
- * the ring buffer indices) by the max request size (which is
- * VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER + struct vstor_packet + u64)
- */
- storDriver->MaxOutstandingRequestsPerChannel =
- ((storDriver->RingBufferSize - PAGE_SIZE) /
- ALIGN_UP(MAX_MULTIPAGE_BUFFER_PACKET +
- sizeof(struct vstor_packet) + sizeof(u64),
- sizeof(u64)));
-
- DPRINT_INFO(STORVSC, "max io %u, currently %u\n",
- storDriver->MaxOutstandingRequestsPerChannel,
- STORVSC_MAX_IO_REQUESTS);
-
- /* Setup the dispatch table */
- storDriver->Base.OnDeviceAdd = StorVscOnDeviceAdd;
- storDriver->Base.OnDeviceRemove = StorVscOnDeviceRemove;
- storDriver->Base.OnCleanup = StorVscOnCleanup;
-
- storDriver->OnIORequest = StorVscOnIORequest;
- storDriver->OnHostReset = StorVscOnHostReset;
-
- DPRINT_EXIT(STORVSC);
-
- return 0;
-}
-
-/**
- * StorVscOnDeviceAdd - Callback when the device belonging to this driver is added
- */
-static int StorVscOnDeviceAdd(struct hv_device *Device, void *AdditionalInfo)
-{
- struct storvsc_device *storDevice;
- /* struct vmstorage_channel_properties *props; */
- struct storvsc_device_info *deviceInfo;
- int ret = 0;
-
- DPRINT_ENTER(STORVSC);
-
- deviceInfo = (struct storvsc_device_info *)AdditionalInfo;
- storDevice = AllocStorDevice(Device);
- if (!storDevice) {
- ret = -1;
- goto Cleanup;
- }
-
- /* Save the channel properties to our storvsc channel */
- /* props = (struct vmstorage_channel_properties *)
- * channel->offerMsg.Offer.u.Standard.UserDefined; */
-
- /* FIXME: */
- /*
- * If we support more than 1 scsi channel, we need to set the
- * port number here to the scsi channel but how do we get the
- * scsi channel prior to the bus scan
- */
-
- /* storChannel->PortNumber = 0;
- storChannel->PathId = props->PathId;
- storChannel->TargetId = props->TargetId; */
-
- storDevice->PortNumber = deviceInfo->PortNumber;
- /* Send it back up */
- ret = StorVscConnectToVsp(Device);
-
- /* deviceInfo->PortNumber = storDevice->PortNumber; */
- deviceInfo->PathId = storDevice->PathId;
- deviceInfo->TargetId = storDevice->TargetId;
-
- DPRINT_DBG(STORVSC, "assigned port %u, path %u target %u\n",
- storDevice->PortNumber, storDevice->PathId,
- storDevice->TargetId);
-
-Cleanup:
- DPRINT_EXIT(STORVSC);
-
- return ret;
-}
-
static int StorVscChannelInit(struct hv_device *Device)
{
struct storvsc_device *storDevice;
return ret;
}
+static void StorVscOnIOCompletion(struct hv_device *Device,
+ struct vstor_packet *VStorPacket,
+ struct storvsc_request_extension *RequestExt)
+{
+ struct hv_storvsc_request *request;
+ struct storvsc_device *storDevice;
+
+ DPRINT_ENTER(STORVSC);
+
+ storDevice = MustGetStorDevice(Device);
+ if (!storDevice) {
+ DPRINT_ERR(STORVSC, "unable to get stor device..."
+ "device being destroyed?");
+ DPRINT_EXIT(STORVSC);
+ return;
+ }
+
+ DPRINT_DBG(STORVSC, "IO_COMPLETE_OPERATION - request extension %p "
+ "completed bytes xfer %u", RequestExt,
+ VStorPacket->VmSrb.DataTransferLength);
+
+ ASSERT(RequestExt != NULL);
+ ASSERT(RequestExt->Request != NULL);
+
+ request = RequestExt->Request;
+
+ ASSERT(request->OnIOCompletion != NULL);
+
+ /* Copy over the status...etc */
+ request->Status = VStorPacket->VmSrb.ScsiStatus;
+
+ if (request->Status != 0 || VStorPacket->VmSrb.SrbStatus != 1) {
+ DPRINT_WARN(STORVSC,
+ "cmd 0x%x scsi status 0x%x srb status 0x%x\n",
+ request->Cdb[0], VStorPacket->VmSrb.ScsiStatus,
+ VStorPacket->VmSrb.SrbStatus);
+ }
+
+ if ((request->Status & 0xFF) == 0x02) {
+ /* CHECK_CONDITION */
+ if (VStorPacket->VmSrb.SrbStatus & 0x80) {
+ /* autosense data available */
+ DPRINT_WARN(STORVSC, "storvsc pkt %p autosense data "
+ "valid - len %d\n", RequestExt,
+ VStorPacket->VmSrb.SenseInfoLength);
+
+ ASSERT(VStorPacket->VmSrb.SenseInfoLength <=
+ request->SenseBufferSize);
+ memcpy(request->SenseBuffer,
+ VStorPacket->VmSrb.SenseData,
+ VStorPacket->VmSrb.SenseInfoLength);
+
+ request->SenseBufferSize =
+ VStorPacket->VmSrb.SenseInfoLength;
+ }
+ }
+
+ /* TODO: */
+ request->BytesXfer = VStorPacket->VmSrb.DataTransferLength;
+
+ request->OnIOCompletion(request);
+
+ atomic_dec(&storDevice->NumOutstandingRequests);
+
+ PutStorDevice(Device);
+
+ DPRINT_EXIT(STORVSC);
+}
+
+static void StorVscOnReceive(struct hv_device *Device,
+ struct vstor_packet *VStorPacket,
+ struct storvsc_request_extension *RequestExt)
+{
+ switch (VStorPacket->Operation) {
+ case VStorOperationCompleteIo:
+ DPRINT_DBG(STORVSC, "IO_COMPLETE_OPERATION");
+ StorVscOnIOCompletion(Device, VStorPacket, RequestExt);
+ break;
+ case VStorOperationRemoveDevice:
+ DPRINT_INFO(STORVSC, "REMOVE_DEVICE_OPERATION");
+ /* TODO: */
+ break;
+
+ default:
+ DPRINT_INFO(STORVSC, "Unknown operation received - %d",
+ VStorPacket->Operation);
+ break;
+ }
+}
+
+static void StorVscOnChannelCallback(void *context)
+{
+ struct hv_device *device = (struct hv_device *)context;
+ struct storvsc_device *storDevice;
+ u32 bytesRecvd;
+ u64 requestId;
+ unsigned char packet[ALIGN_UP(sizeof(struct vstor_packet), 8)];
+ struct storvsc_request_extension *request;
+ int ret;
+
+ DPRINT_ENTER(STORVSC);
+
+ ASSERT(device);
+
+ storDevice = MustGetStorDevice(device);
+ if (!storDevice) {
+ DPRINT_ERR(STORVSC, "unable to get stor device..."
+ "device being destroyed?");
+ DPRINT_EXIT(STORVSC);
+ return;
+ }
+
+ do {
+ ret = device->Driver->VmbusChannelInterface.RecvPacket(device,
+ packet,
+ ALIGN_UP(sizeof(struct vstor_packet), 8),
+ &bytesRecvd, &requestId);
+ if (ret == 0 && bytesRecvd > 0) {
+ DPRINT_DBG(STORVSC, "receive %d bytes - tid %llx",
+ bytesRecvd, requestId);
+
+ /* ASSERT(bytesRecvd == sizeof(struct vstor_packet)); */
+
+ request = (struct storvsc_request_extension *)
+ (unsigned long)requestId;
+ ASSERT(request);
+
+ /* if (vstorPacket.Flags & SYNTHETIC_FLAG) */
+ if ((request == &storDevice->InitRequest) ||
+ (request == &storDevice->ResetRequest)) {
+ /* DPRINT_INFO(STORVSC,
+ * "reset completion - operation "
+ * "%u status %u",
+ * vstorPacket.Operation,
+ * vstorPacket.Status); */
+
+ memcpy(&request->VStorPacket, packet,
+ sizeof(struct vstor_packet));
+
+ osd_WaitEventSet(request->WaitEvent);
+ } else {
+ StorVscOnReceive(device,
+ (struct vstor_packet *)packet,
+ request);
+ }
+ } else {
+ /* DPRINT_DBG(STORVSC, "nothing else to read..."); */
+ break;
+ }
+ } while (1);
+
+ PutStorDevice(device);
+
+ DPRINT_EXIT(STORVSC);
+ return;
+}
+
static int StorVscConnectToVsp(struct hv_device *Device)
{
struct vmstorage_channel_properties props;
return ret;
}
+/**
+ * StorVscOnDeviceAdd - Callback when the device belonging to this driver is added
+ */
+static int StorVscOnDeviceAdd(struct hv_device *Device, void *AdditionalInfo)
+{
+ struct storvsc_device *storDevice;
+ /* struct vmstorage_channel_properties *props; */
+ struct storvsc_device_info *deviceInfo;
+ int ret = 0;
+
+ DPRINT_ENTER(STORVSC);
+
+ deviceInfo = (struct storvsc_device_info *)AdditionalInfo;
+ storDevice = AllocStorDevice(Device);
+ if (!storDevice) {
+ ret = -1;
+ goto Cleanup;
+ }
+
+ /* Save the channel properties to our storvsc channel */
+ /* props = (struct vmstorage_channel_properties *)
+ * channel->offerMsg.Offer.u.Standard.UserDefined; */
+
+ /* FIXME: */
+ /*
+ * If we support more than 1 scsi channel, we need to set the
+ * port number here to the scsi channel but how do we get the
+ * scsi channel prior to the bus scan
+ */
+
+ /* storChannel->PortNumber = 0;
+ storChannel->PathId = props->PathId;
+ storChannel->TargetId = props->TargetId; */
+
+ storDevice->PortNumber = deviceInfo->PortNumber;
+ /* Send it back up */
+ ret = StorVscConnectToVsp(Device);
+
+ /* deviceInfo->PortNumber = storDevice->PortNumber; */
+ deviceInfo->PathId = storDevice->PathId;
+ deviceInfo->TargetId = storDevice->TargetId;
+
+ DPRINT_DBG(STORVSC, "assigned port %u, path %u target %u\n",
+ storDevice->PortNumber, storDevice->PathId,
+ storDevice->TargetId);
+
+Cleanup:
+ DPRINT_EXIT(STORVSC);
+
+ return ret;
+}
/**
* StorVscOnDeviceRemove - Callback when the our device is being removed
DPRINT_EXIT(STORVSC);
}
-static void StorVscOnIOCompletion(struct hv_device *Device,
- struct vstor_packet *VStorPacket,
- struct storvsc_request_extension *RequestExt)
+/**
+ * StorVscInitialize - Main entry point
+ */
+int StorVscInitialize(struct hv_driver *Driver)
{
- struct hv_storvsc_request *request;
- struct storvsc_device *storDevice;
+ struct storvsc_driver_object *storDriver;
DPRINT_ENTER(STORVSC);
- storDevice = MustGetStorDevice(Device);
- if (!storDevice) {
- DPRINT_ERR(STORVSC, "unable to get stor device..."
- "device being destroyed?");
- DPRINT_EXIT(STORVSC);
- return;
- }
-
- DPRINT_DBG(STORVSC, "IO_COMPLETE_OPERATION - request extension %p "
- "completed bytes xfer %u", RequestExt,
- VStorPacket->VmSrb.DataTransferLength);
-
- ASSERT(RequestExt != NULL);
- ASSERT(RequestExt->Request != NULL);
-
- request = RequestExt->Request;
-
- ASSERT(request->OnIOCompletion != NULL);
-
- /* Copy over the status...etc */
- request->Status = VStorPacket->VmSrb.ScsiStatus;
+ storDriver = (struct storvsc_driver_object *)Driver;
- if (request->Status != 0 || VStorPacket->VmSrb.SrbStatus != 1) {
- DPRINT_WARN(STORVSC,
- "cmd 0x%x scsi status 0x%x srb status 0x%x\n",
- request->Cdb[0], VStorPacket->VmSrb.ScsiStatus,
- VStorPacket->VmSrb.SrbStatus);
- }
+ DPRINT_DBG(STORVSC, "sizeof(STORVSC_REQUEST)=%zd "
+ "sizeof(struct storvsc_request_extension)=%zd "
+ "sizeof(struct vstor_packet)=%zd, "
+ "sizeof(struct vmscsi_request)=%zd",
+ sizeof(struct hv_storvsc_request),
+ sizeof(struct storvsc_request_extension),
+ sizeof(struct vstor_packet),
+ sizeof(struct vmscsi_request));
- if ((request->Status & 0xFF) == 0x02) {
- /* CHECK_CONDITION */
- if (VStorPacket->VmSrb.SrbStatus & 0x80) {
- /* autosense data available */
- DPRINT_WARN(STORVSC, "storvsc pkt %p autosense data "
- "valid - len %d\n", RequestExt,
- VStorPacket->VmSrb.SenseInfoLength);
+ /* Make sure we are at least 2 pages since 1 page is used for control */
+ ASSERT(storDriver->RingBufferSize >= (PAGE_SIZE << 1));
- ASSERT(VStorPacket->VmSrb.SenseInfoLength <=
- request->SenseBufferSize);
- memcpy(request->SenseBuffer,
- VStorPacket->VmSrb.SenseData,
- VStorPacket->VmSrb.SenseInfoLength);
+ Driver->name = gDriverName;
+ memcpy(&Driver->deviceType, &gStorVscDeviceType,
+ sizeof(struct hv_guid));
- request->SenseBufferSize =
- VStorPacket->VmSrb.SenseInfoLength;
- }
- }
+ storDriver->RequestExtSize = sizeof(struct storvsc_request_extension);
- /* TODO: */
- request->BytesXfer = VStorPacket->VmSrb.DataTransferLength;
+ /*
+ * Divide the ring buffer data size (which is 1 page less
+ * than the ring buffer size since that page is reserved for
+ * the ring buffer indices) by the max request size (which is
+ * VMBUS_CHANNEL_PACKET_MULITPAGE_BUFFER + struct vstor_packet + u64)
+ */
+ storDriver->MaxOutstandingRequestsPerChannel =
+ ((storDriver->RingBufferSize - PAGE_SIZE) /
+ ALIGN_UP(MAX_MULTIPAGE_BUFFER_PACKET +
+ sizeof(struct vstor_packet) + sizeof(u64),
+ sizeof(u64)));
- request->OnIOCompletion(request);
+ DPRINT_INFO(STORVSC, "max io %u, currently %u\n",
+ storDriver->MaxOutstandingRequestsPerChannel,
+ STORVSC_MAX_IO_REQUESTS);
- atomic_dec(&storDevice->NumOutstandingRequests);
+ /* Setup the dispatch table */
+ storDriver->Base.OnDeviceAdd = StorVscOnDeviceAdd;
+ storDriver->Base.OnDeviceRemove = StorVscOnDeviceRemove;
+ storDriver->Base.OnCleanup = StorVscOnCleanup;
- PutStorDevice(Device);
+ storDriver->OnIORequest = StorVscOnIORequest;
+ storDriver->OnHostReset = StorVscOnHostReset;
DPRINT_EXIT(STORVSC);
-}
-
-
-static void StorVscOnReceive(struct hv_device *Device,
- struct vstor_packet *VStorPacket,
- struct storvsc_request_extension *RequestExt)
-{
- switch (VStorPacket->Operation) {
- case VStorOperationCompleteIo:
- DPRINT_DBG(STORVSC, "IO_COMPLETE_OPERATION");
- StorVscOnIOCompletion(Device, VStorPacket, RequestExt);
- break;
- case VStorOperationRemoveDevice:
- DPRINT_INFO(STORVSC, "REMOVE_DEVICE_OPERATION");
- /* TODO: */
- break;
-
- default:
- DPRINT_INFO(STORVSC, "Unknown operation received - %d",
- VStorPacket->Operation);
- break;
- }
-}
-
-static void StorVscOnChannelCallback(void *context)
-{
- struct hv_device *device = (struct hv_device *)context;
- struct storvsc_device *storDevice;
- u32 bytesRecvd;
- u64 requestId;
- unsigned char packet[ALIGN_UP(sizeof(struct vstor_packet), 8)];
- struct storvsc_request_extension *request;
- int ret;
-
- DPRINT_ENTER(STORVSC);
-
- ASSERT(device);
-
- storDevice = MustGetStorDevice(device);
- if (!storDevice) {
- DPRINT_ERR(STORVSC, "unable to get stor device..."
- "device being destroyed?");
- DPRINT_EXIT(STORVSC);
- return;
- }
-
- do {
- ret = device->Driver->VmbusChannelInterface.RecvPacket(device,
- packet,
- ALIGN_UP(sizeof(struct vstor_packet), 8),
- &bytesRecvd, &requestId);
- if (ret == 0 && bytesRecvd > 0) {
- DPRINT_DBG(STORVSC, "receive %d bytes - tid %llx",
- bytesRecvd, requestId);
- /* ASSERT(bytesRecvd == sizeof(struct vstor_packet)); */
-
- request = (struct storvsc_request_extension *)
- (unsigned long)requestId;
- ASSERT(request);
-
- /* if (vstorPacket.Flags & SYNTHETIC_FLAG) */
- if ((request == &storDevice->InitRequest) ||
- (request == &storDevice->ResetRequest)) {
- /* DPRINT_INFO(STORVSC,
- * "reset completion - operation "
- * "%u status %u",
- * vstorPacket.Operation,
- * vstorPacket.Status); */
-
- memcpy(&request->VStorPacket, packet,
- sizeof(struct vstor_packet));
-
- osd_WaitEventSet(request->WaitEvent);
- } else {
- StorVscOnReceive(device,
- (struct vstor_packet *)packet,
- request);
- }
- } else {
- /* DPRINT_DBG(STORVSC, "nothing else to read..."); */
- break;
- }
- } while (1);
-
- PutStorDevice(device);
-
- DPRINT_EXIT(STORVSC);
- return;
+ return 0;
}
projects / platform / kernel / linux-stable.git / commitdiff